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Preparation of LaNiO3 perovskite by oxalate and carbonate precursor method for utilization as catalyst for high-temperature decomposition of N2O
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SYSNO ASEP 0511953 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Preparation of LaNiO3 perovskite by oxalate and carbonate precursor method for utilization as catalyst for high-temperature decomposition of N2O Author(s) Bělina, P. (CZ)
Sádovská, Galina (UFCH-W) RID, ORCID
Krejčíková, V. (CZ)
Dohnalová, Ž. (CZ)
Šulcová, P. (CZ)Source Title Journal of Thermal Analysis and Calorimetry. - : Akadémiai Kiadó - ISSN 1388-6150
Roč. 138, č. 6 (2019), s. 4197-4202Number of pages 6 s. Language eng - English Country HU - Hungary Keywords Carbonate precursor method ; LaNiO 3 ; Mixed metal oxides ; N O decomposition 2 ; Oxalate precursor method ; Perovskite ; Thermal decomposition Subject RIV CF - Physical ; Theoretical Chemistry OECD category Physical chemistry R&D Projects LM2015073 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) EF16_013/0001821 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Method of publishing Limited access Institutional support UFCH-W - RVO:61388955 UT WOS 000501308800030 EID SCOPUS 85069919063 DOI 10.1007/s10973-019-08596-9 Annotation The mixed oxide LaNiO3 with perovskite structure was prepared by two relatively new and unconventional methods including preparation and thermal decomposition of mixed metal oxalate or carbonate precursors. The intermediates were prepared by reaction in a highly concentrated suspension (paste). The thermal decomposition conditions of these intermediates were described, and the final calcination temperatures were determined, which were done using thermal analysis methods and X-ray diffraction. During the decomposition of mixed carbonates, one-phase LaNiO3 is produced directly, and in case of decomposition of oxalates, a mixture of LaNiO3 and La2O3 is produced due to the formation of La2O2CO3 during the heating. Catalytic decomposition of nitrous oxide at high temperature (650-930 degrees C) and high loading (GHSV = 350,000 h(-1)) has shown high LaNiO3 activity, even at lower temperatures. The results were compared with the same compound obtained by co-precipitation and by solid-state reaction. Methods of preparation based on decomposition of oxalate and carbonate intermediates lead to the preparation of materials with appropriate composition, morphology, specific surface and high catalytic activity. Workplace J. Heyrovsky Institute of Physical Chemistry Contact Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Year of Publishing 2020 Electronic address http://hdl.handle.net/11104/0302186
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